New! Enta's Slope Management Schoolis an information site dedicated to slope construction, by slope construction professionals, and for slope construction professionals.

Hello, everyone. This is Enta. When you’re tensioning ground anchors, you attach a dial gauge or digital meter to the jack side, right? That’s to measure the elongation of the prestressed steel strands. It’s not enough to just check the tension load—you need to verify both the load and the elongation. For beginners…

Hello, everyone. This is Enta. When I’m driving down country roads, I often see old retaining walls made of cobblestones, don’t I? Some of them are even arched outwards, and I find myself staring at them every time, wondering, “Is this really going to hold up?” lol. Those stone walls that our ancestors built one stone at a time really do make for a nice view…

The “Situational Instinct” That Leads to Accidents When You’re Too Focused—If You Take a Moment to Think Calmly, It Makes Sense: “Why Did They Do That?” Have you ever found yourself scratching your head after an accident at a worksite, trying to figure out why the victim acted the way they did? For example, when heavy materials being hoisted lose their balance and are about to fall…

Hello, everyone. This is Enta. It’s getting hot again this year, isn’t it? It feels like the humidity is setting in early… Since many of our slope construction sites are high up on slopes with nowhere to escape to, summer really takes its toll. At our company, we always remind everyone to stay hydrated in the mornings during this time of year, but every year I wonder, “Is this really enough?…”

Hello, everyone. This is Enta. We’ve entered the rainy season, and it’s that time of year when the schedule on-site keeps changing due to the rain. During times like this, I spend more time at the office poring over blueprints. And the humidity just makes me more and more irritable... In this post, I’ll be talking about “rock bolts and rebar insertion work…”

Hello, everyone. This is Enta. At a water collection and drainage boring site, you’re bound to run into one of these four issues: ① Perforated pipe getting pulled up along with the borehole; ② Jamming; ③ The borehole casing won’t go in due to ground collapse; ④ The slurry doesn’t come back up. It’s one of those moments on site where you think, “Ah, so it’s this one this time, huh? lol”…

Hello, everyone. This is Enta. Now that the rainy season has begun, we’re spending our days keeping a close eye on the weather forecast to plan our work schedule. Work stops when it rains, and we push ahead as fast as we can when it clears up. It happens every year, but this time of year really does present all sorts of challenges, lol. Anyway, today I’d like to talk about CAIF (Construction Industry…

Hello, everyone. This is Enta. This happened a while back, but I was on-site at a construction project overseeing an assembly inspection when the person in charge pointed out, “Oh, this is a T-joint,” and the whole site went dead silent lol. Since T-joints are generally prohibited under the Japan Society of Civil Engineers’ Standard Specifications for Concrete, it’s only natural that when one is found…

Hello, everyone. This is Enta. When you’re working on a slope and think, “The mortar feels unusually runny today,” the standard practice is to suspect the sand’s surface moisture content before questioning the mix design. (I even suspect the workers’ water-to-cement ratio, lol.) Basically, even if you think you’ve followed the mix design specified in the mix chart—say, “W/C=50%”—the sand might contain…